Question

Question #bcc3d

Answer 1

`(1) : f(g(x))=-40x+31`.

`(2) : f(g(x)0=-9x+25`.

Explanation:

`f(x)=-4x+7`, and, `g(x)=10x-6=y,`say.

Then, `f(g(x))=f(y)=-4y+7............[defn. of f]`

=-4(10x-6)+7=-40x+24+7=-40x+31#.

Thus, `f(g(x))=-40x+31`.

Similarly, in the second case, `f(g(x))=-9x+25`.